393216473 has 8 divisors (see below), whose sum is σ = 426064128. Its totient is φ = 360740304.

The previous prime is 393216469. The next prime is 393216479. The reversal of 393216473 is 374612393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 393216473 - 2² = 393216469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (393216479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90665 + ... + 94902.

It is an arithmetic number, because the mean of its divisors is an integer number (53258016).

Almost surely, 2^393216473 is an apocalyptic number.

It is an amenable number.

393216473 is a deficient number, since it is larger than the sum of its proper divisors (32847655).

393216473 is a wasteful number, since it uses less digits than its factorization.

393216473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185743.

The product of its digits is 81648, while the sum is 38.

The square root of 393216473 is about 19829.6866591482. The cubic root of 393216473 is about 732.6174089894.

The spelling of 393216473 in words is "three hundred ninety-three million, two hundred sixteen thousand, four hundred seventy-three".